Because you are computer illiterate!
here is what you posted
[img]http://[url=http://i0.kym-cdn.com/photos/images/newsfeed/000/200/420/BRTky.jpg?1321408042]http://i0.kym-cdn.com/photos/images/newsfeed/000/200/420/BRTky.jpg?1321408042[/url][/img]
Should be
[img]http://i0.kym-cdn.com/photos/images/newsfeed/000/200/420/BRTky.jpg?1321408042[/img]